electronics - filters

what is cutoff frequency (fc)

the frequency where output falls to 70.7% of maximum

what is the gain at the cutoff frequency

-3 Db or 70.7% of maxium voltage

what happens below fc in a high pass filter

signals are increasingly reduced

what happens above fc in a lowpass filter

signals are increasingly reduced

what two frequencies define a band-pass filter

lower cutoff and upper cutoff frequencies

what is the passband

the width where the 70.7% rule is in effect

what is the stopband

the width where frequency is rejected

to build a rc low pass filter what component is first in series

Resisitor

to build a rc high pass filter what component is first in series

capacitor

in a bandfilter which comes first low pass or high pass

High pass first then low pass